From: Brad Bonham (bbonham@cisco.com)
Date: Fri Dec 06 2002 - 16:09:14 GMT-3
Jay,
With OSPF Demand circuit the line will come up if you have not turned off
"ip peer default" I think the following link will clear things up a little
http://www.cisco.com/warp/public/104/dcprob.html
Brad
----- Original Message -----
From: "Jay Greenberg" <groupstudylist@execulink.com>
To: "csc david" <davidcsc2002@yahoo.com.cn>
Cc: <ccielab@groupstudy.com>
Sent: Friday, December 06, 2002 10:06 AM
Subject: Re: ospf demand-circuit
> I suppose you could make it a backup demand-circuit by ensuring that the
> cost of the ISDN link is greater than that of the serial link. This may
> already be the case if default bandwidths are used on the link.
>
> On Fri, 2002-12-06 at 07:17, csc david wrote:
> > Hello, everybody, I have some ospf demand-circuit questions.
> >
> > r1 communicates with r2, all in ospf network, they communicate with each
other through frame-relay, and isdn is a backup.
> >
> > Q1: if I cannot use backup interface or dialer watch-group, only use ip
ospf demand-circuit, can it work in backup mode?
> >
> > Q2: when frame-relay is working, and I make the isdn working
too(10.105.2.17), so I get :
> >
> > WH2650XM#sh ip ospf n
> >
> > Neighbor ID Pri State Dead Time Address
Interface
> > 10.121.2.5 1 FULL/ - 00:00:39 10.105.2.5
Serial0/1 (frame-relay)
> > 10.122.2.9 1 FULL/ - 00:00:38 10.105.2.9
Serial0/0 (frame-relay)
> > 192.168.1.20 1 FULL/ - - 10.105.2.17 BRI0/0
> > 10.105.38.5 1 2WAY/DROTHER 00:00:36 10.105.1.4
FastEthernet0/0
> >
> > but after sometime, it appears:
> >
> > 00:20:45: %OSPF-5-ADJCHG: Process 100, Nbr 192.168.1.20 on BRI0/0 from
FULL to D
> > OWN, Neighbor Down: Too many retransmissions
> >
> > Neighbor ID Pri State Dead Time Address
Interface
> > 10.121.2.5 1 FULL/ - 00:00:39 10.105.2.5
Serial0/1
> > 10.122.2.9 1 FULL/ - 00:00:37 10.105.2.9
Serial0/0
> > 10.105.38.5 1 2WAY/DROTHER 00:00:38 10.105.1.4
FastEthernet0/0
> >
> > why?
> >
> > Thanks!
> >
> >
> >
> > ---------------------------------
> > Do You Yahoo!?
> > "JGIT>+S"Bp#?P!JTE#56;qJ1IP4s=1#!"
> > .
> .
.
This archive was generated by hypermail 2.1.4 : Fri Jan 17 2003 - 17:21:40 GMT-3